3(7+5k)=-(k-5)

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Solution for 3(7+5k)=-(k-5) equation: 



3(7+5k)=-(k-5)

We move all terms to the left:

3(7+5k)-(-(k-5))=0

We add all the numbers together, and all the variables

3(5k+7)-(-(k-5))=0

We multiply parentheses

15k-(-(k-5))+21=0



We calculate terms in parentheses: -(-(k-5)), so:

-(k-5)

We get rid of parentheses

-k+5

We add all the numbers together, and all the variables

-1k+5

Back to the equation:

-(-1k+5)



We get rid of parentheses

15k+1k-5+21=0

We add all the numbers together, and all the variables

16k+16=0

We move all terms containing k to the left, all other terms to the right

16k=-16

k=-16/16

k=-1

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